Re: [PATCH v10 3/8] gpu: Fix uninitialized buddy for built-in drivers

[Danilo Krummrich]

On Wed Feb 18, 2026 at 9:55 PM CET, Joel Fernandes wrote:
> From: Koen Koning <koen.koning@xxxxxxxxxxxxxxx>
>
> Use subsys_initcall instead of module_init for the GPU buddy allocator,
> so its initialization code runs before any gpu drivers.
> Otherwise, a built-in driver that tries to use the buddy allocator will
> run into a kernel NULL pointer dereference because slab_blocks is
> uninitialized.
>
> Specifically, this fixes drm/xe (as built-in) running into a kernel
> panic during boot, because it uses buddy during device probe.
>
> Fixes: ba110db8e1bc ("gpu: Move DRM buddy allocator one level up (part two)")

This Fixes: tag seems wrong. How is this code move related to this problem?

This should rather be:

Fixes: 6387a3c4b0c4 ("drm: move the buddy allocator from i915 into common drm")

Also, please add:

Cc: stable@xxxxxxxxxxxxxxx

> Cc: Joel Fernandes <joelagnelf@xxxxxxxxxx>
> Cc: Dave Airlie <airlied@xxxxxxxxxx>
> Cc: intel-xe@xxxxxxxxxxxxxxxxxxxxx
> Cc: Peter Senna Tschudin <peter.senna@xxxxxxxxxxxxxxx>
> Cc: Matthew Auld <matthew.auld@xxxxxxxxx>
> Signed-off-by: Koen Koning <koen.koning@xxxxxxxxxxxxxxx>
> Reviewed-by: Joel Fernandes <joelagnelf@xxxxxxxxxx>
> Signed-off-by: Joel Fernandes <joelagnelf@xxxxxxxxxx>

I also think this patch should be sent separately and go through drm-misc-fixes.